/**
* 头部菜单
*/ 
<template>
  <el-menu
    class="el-menu-demo"
    mode="horizontal"
    background-color="#334157"
    text-color="#fff"
    active-text-color="#fff"
  >
    <el-button class="buttonimg">
      <img class="showimg" :src="collapsed?imgsq:imgshow" @click="toggle(collapsed)" />
    </el-button>
    <el-submenu index="2" class="submenu">
      <template slot="title">{{userName}}</template>
      <el-menu-item @click="exit()" index="2-3">退出</el-menu-item>
    </el-submenu>
  </el-menu>
</template>
<script>
export default {
  name: "Navcon",
  data() {
    return {
      collapsed: true,
      imgshow: require("../../assets/img/show.png"),
      imgsq: require("../../assets/img/sq.png"),
      userName: "Dio",
    };
  },
  // 创建完毕状态(里面是操作)
  created() {},
  methods: {
    // 退出登录
    exit() {
      this.$confirm("退出登录, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(() => {
          this.$router.push({ path: "/login" });
          this.$message({
            type: "success",
            message: "已退出登录!",
          });
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消",
          });
        });
    },
    // 切换显示
    toggle(showtype) {
      this.collapsed = !showtype;
      this.$root.Bus.$emit("toggle", this.collapsed);
    },
  },
};
</script>
<style scoped>
.el-menu-demo {
  height: 60px;
}
.el-menu-vertical-demo:not(.el-menu--collapse) {
  border: none;
}
.submenu {
  float: right;
}
.buttonimg {
  height: 60px;
  background-color: transparent;
  border: none;
}
.showimg {
  width: 26px;
  height: 26px;
  position: absolute;
  top: 17px;
  left: 17px;
}
.showimg:active {
  border: none;
}
</style>